How umask Function Works in PHP
Umask function subtracts permissions for files and directories on creation. Permission values: 0 = --- no permission 1 = --x execute 2 = -w- write 3 = -wx write and execute 4 = r-- read 5 = r-x read and execute 6 = rw- read and write 7 = rwx read, write and execute <?php // default 0644 = rw-r--r-- // we want 0400 = r-------- // 0777 - 0400 = 0377 umask(0377); // The file will be created with permissions 0400 fopen('test.txt', 'w');
